手法を比較

	岩盤分類	坑井测井分析
分野	地球科学	地球科学
系統	Process / pipeline	Process / pipeline
提唱年	1974	1940s
提唱者	Bieniawski and Barton	Guyod and Barnhart
種類	engineering geology assessment pipeline	subsurface characterization pipeline
原典	Bieniawski, Z. T. (1989). Engineering Rock Mass Classifications. John Wiley & Sons.	Asquith, G. B., & Gibson, C. R. (2004). Basic Well Log Analysis (2nd ed.). American Association of Petroleum Geologists.
別名	RMR system, Q-system classification, rock quality designation	wireline logging, borehole logging, petrophysical analysis
関連	4	5
概要	Rock mass classification is the systematic assessment of rock quality and mechanical behavior in engineering geology, combining field observations of jointing, weathering, and strength into a numerical index. Pioneered by Bieniawski (RMR system, 1974) and Barton (Q-system, 1974), these methods enable rapid site assessment and guide design of excavations, dams, and slopes. Classification bridges the gap between small laboratory samples and large field-scale behavior.	Well log analysis is the systematic examination of measurements recorded by instruments lowered into a borehole to characterize subsurface lithology, fluid content, and petrophysical properties. Originating in the 1940s, this method has become indispensable for petroleum exploration, groundwater assessment, and engineering geology. Well logs provide direct depth-correlated data that anchor interpretation of seismic surveys and constrain reservoir models.